Alder Gold and Copper Mill


	Region 10 Superfund: Alder Gold and Copper Mill

Serving the people of Alaska, Idaho, Oregon, Washington and 270 Native Tribes

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Alder Gold and Copper Mill

Site Location: approximately two miles south of Twisp, Washington. EPA's summer 2002 tests find that the elevated levels of arsenic in the area are naturally occurring, and not related to a source such as the Alder Gold and Copper Mill.

Technical Documents (Top) read about .pdf
Alder Mill on EPAOSC.net

Removal Administrative Record Index
Integrated Assessment *** Draft *** - September 2002

Main Report (.9 MB .pdf file)
Section 2 Figures (1.1 MB .pdf file)
Section 3 Figures (4.1 MB .pdf file)
Figures 7-1 and 7.2 (2.8 MB .pdf file)
Figure 7-3 (2.3 MB .pdf file)
Figure 7-4 (3.2 MB .pdf file)
Photos (4.7 MB .pdf file)

Action Memorandum - September 6, 2002

Alder Mill/Ecology Sampling Data in Excel spreadsheet - Summer 2001

Sampling and Quality Assurance Plan (SQAP) - May 15, 2002

Figure 1-1:

Project Organization Chart

Figure 1-2:

Figure 1-3:

Figure 1-4:

Figure 1-5:

Table 2-1: Sample Information Summary

Table 2-2: Sample Analysis Summary

Table 2-3: QA/QC Analytical Summary and Fixed Laboratory Analytical Methods

Photos Courtesy of Washington Department of Ecology

Photo 1:

Assay Oven

Photo 2:

Flotation tank with residual salts from extraction process

Photo 3:

(Right side of picture) Ball mill used to crush ore

Photo 4:

Ball mill

Photo 5:

Former settling pond north of mill building

Photo 6:

Former settling pond, looking south

Draft Removal Assessment - Memorandum - March 8, 2002

Table 1

- Groundwater Well Samples Analytical Results

Table 2

- Groundwater Well Screened Samples Analytical Results Summary

Table 3

- Alternatives for Uncontaminated Drinking Water

Tables 4 through 8

- Cost Estimates and Comparison

Action Memorandum - January 16, 2002
General arsenic treatment information - June 2002

Fact Sheets and Presentations (Top)

Cleanup reduces exposure risks - June 2003
Bottled water to end October 30 - October 2002
EPA presentation regarding findings from integrated assessment - September12, 2002
WDOH presentation on home treatment systems for arsenic September12, 2002
Drinking Water Well Test Results to be Discussed at September 12 Meeting - August 2002
Agencies Consider Treating Tap Water - April 2002

News (Top)
EPA: Arsenic is not coming from mill - September 18, 2002, Methowvalleynews.com

Methow Valley News - January 30, 2002 - Bottled water offered to Alder Mill neighbors
Press Release - January 28, 2002 - Alder Mill area residents to receive bottled water

Health Risks (Top)
Arsenic in Drinking Water - EPA
Arsenic in Drinking Water - Washington State Department of Health

More Arsenic Information - ATSDR

Points of Contact: (Top)
EPA Community Relations
Debra Sherbina (206)553-0247

Washington Department of Ecology
Rick Roeder (509) 454-7637

Okanagan Co. Health District
Dave Hilton (509) 422-7140

Photos:

photo - "GapVax" truck backed up to dilapidated tin building. hoses and debris beside truck.

Decontamination vacuum truck

photo - photo - treed hillside behind dilapidated tin building and yellowing pond

Mill facility & tailings pond - November 2002

photo - workers with respirators observe and water down rocks and sand being dumped on yellow pile.

VacTruck emptying into tailings pond - November 2002

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Point of contact: David Rees
E-Mail: rees.david@epa.gov
Phone Number: (206) 553-1808
Last Updated: 05/19/2006